Here is the list:

Tight Afro 0.2cm
Afro 0.4cm
Loose Afro 0.6cm
Tightest Curl 0.8cm
Tight Curl 1.0cm
Very Curly 1.2cm
Curly 1.5cm
Loose Curl 1.8cm
Light Curl 2.2cm
Very Wavy 2.5cm
Wavy 3.0cm
Light Wave 3.2cm
Body Wave 3.8cm
Straight 5cm